Sintrat keramiskt material omfattande sialonkorn samt metod för dess framställning

摘要

A sintered ceramic material for high speed machining of heat resistant alloys is provided comprising sialon grains and 0.2-20 /o intergranular phase. At least 80 /o of said sialon phase is beta sialon having a z-value greater than 1.0, but less than 1.5. The ceramic material has a Vickers Hardness HV1 of more than 1530 and it is produced by gas pressure sintering.